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A117268
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Triangle, binomial transform of the tribonacci sequence.
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2
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1, 1, 1, 2, 1, 2, 4, 2, 3, 5, 7, 4, 6, 9, 14, 13, 7, 11, 17, 26, 40, 24, 13, 20, 31, 48, 74, 114, 44, 24, 37, 57, 88, 136, 210, 324, 81, 44, 68, 105, 162, 250, 386, 596, 920
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,4
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COMMENTS
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Leftmost column of the triangle = the tribonacci sequence A000073.
Rightmost diagonal of the triangle = A117189.
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LINKS
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FORMULA
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EXAMPLE
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Taking difference rows of A117267: (1; 1, 2; 2, 3, 5; 4, 6, 9, 14;...), we get A117268:
1;
1, 1;
2, 1, 2;
4, 2, 3, 5;
7, 4, 6, 9, 14;
13, 7, 11, 17, 26, 40;
24, 13, 20, 31, 48, 74, 114;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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